What does "Invalid timestamp The security semantics of the message have expired" mean?
Up to Table of ContentsThis FAQ applies to: 5.2
Each message sent by the client contains a time-stamp. The server refuses messages sent more than five minutes ago. This is to prevent replay attacks (where an attacker gets hold of a valid message and then sends it again later).
Check the system clock on your server and make sure it's set to the same time as the client machine.
On Linux, you can use the ntpdate command to set the clock to the right time using a time server.